<template>

  <a-layout>

    <a-layout-content :style="{ background: '#fff', padding: '24px', margin: 0, minHeight: '280px' }">
      <p>
        <a-form
            layout="inline"
            :model="param"
        >
          <a-form-item>
            <a-input v-model:value="param.name" placeholder="名称">
            </a-input>
          </a-form-item>
          <a-form-item>
            <a-button type="primary" @click="handleQuery({page: 1,size: pagination.pageSize})">
              查询
            </a-button>
          </a-form-item>
          <a-form-item>
            <a-button type="primary" @click="add()">
              新增
            </a-button>
          </a-form-item>
        </a-form>
      </p>

      <a-table
          :columns="columns"
          :row-key="record => record.id"
          :data-source="ebooks"
          :pagination="pagination"
          :loading="loading"
          @change="handleTableChange"
      >
        <template #cover="{text:cover}">
          <img v-if="cover" :src="cover" alt="avatar"/>
        </template>

        <template v-slot:category="{text,record}">
          <span>{{getCategoryName(record.category1Id)}} / {{getCategoryName(record.category2Id)}} </span>
        </template>

        <template v-slot:action="{text,record}">
          <a-space size="small">
            <router-link :to="'/admin/doc?ebookId='+ record.id" >
              <a-button type="primary" >
                文档管理
              </a-button>
            </router-link>


            <a-button type="primary" @click="edit(record)">
              编辑
            </a-button>

            <a-popconfirm
                title="删除后不可恢复，确认删除？"
                ok-text="是"
                cancel-text="否"
                @confirm="handleDelete(record.id)"
            >
              <a-button type="danger">
                删除
              </a-button>
            </a-popconfirm>

          </a-space>
        </template>
      </a-table>

    </a-layout-content>
  </a-layout>

  <a-modal
      title="电子书表单"
      v-model:visible="modalVisible"
      :confirm-loading="modalLoading"
      @ok="handleModalOk"
  >

    <a-form :model="ebook" :label-col="{span: 6}">
      <a-form-item label="封面">
        <a-input v-model:value = "ebook.cover" />
      </a-form-item>
      <a-form-item label="名称">
        <a-input v-model:value = "ebook.name" />
      </a-form-item>
      <a-form-item label="分类">
        <a-cascader
            v-model:value="categoryIds"
            :field-names="{label: 'name',value: 'id',children: 'children' }"
            :options="level1"
        />
      </a-form-item>
      <a-form-item label="描述">
        <a-input v-model:value = "ebook.description" type="text" />
      </a-form-item>
    </a-form>

  </a-modal>
</template>

<script lang="ts">
import {defineComponent, onMounted, ref} from "vue";
import axios from "axios";
import {message} from 'ant-design-vue';
import {Tool} from "@/util/tool";

export default defineComponent({
  name: 'AdminEbook',
  setup() {
    const param = ref();
    param.value = {};
    const ebooks = ref();
    const pagination = ref({
      current: 1, //当前页
      pageSize: 5, //每一页数量
      total: 0
    });
    const loading = ref(false);

    const columns = [
      {
        title: '封面',
        dataIndex: 'cover',
        slots: {customRender: 'cover'}
      },
      {
        title: '名称',
        dataIndex: 'name',
      },
      {
        title: '分类',
        slots: {customRender: 'category'}
      },
      {
        title: '文档数',
        dataIndex: 'docCount'
      },
      {
        title: '阅读数',
        dataIndex: 'viewCount'
      },
      {
        title: '点赞数',
        dataIndex: 'voteCount'
      },
      {
        title: 'Action',
        key: 'action',
        slots: {customRender: 'action'}
      },
    ]
    /**
     * 数据查询
     */
    const handleQuery = (params: any) => {
      loading.value = true;
      //如果不清空，编辑保存后，再点编辑还是修改前的数据
      ebooks.value=[];
      axios.get("/ebook/list", {
        params:{
          page:params.page,
          size:params.size,
          name:param.value.name
        }
      }).then((response) => {

        loading.value = false;
        const data = response.data;
        if (data.success){
          ebooks.value=data.content.list;

          //重置分页按钮
          pagination.value.current = params.page;
          pagination.value.total = data.content.total;
        }else {
          message.error(data.message);
        }
      });
    };

    /**
     * 表格点击页码时触发
     */
    const handleTableChange = (pagination: any) => {
      console.log("看看自带的分页参数有哪些："+pagination);
      handleQuery({
        page:pagination.current,
        size:pagination.pageSize
      });
    };

    //------------------ 表单 ------------------
    /**
     * categoryIds是个数组 [100,101] 对应：前端开发/Vue
     */
    const categoryIds = ref();
    const ebook = ref();
    const modalVisible = ref(false);
    const modalLoading = ref(false);

    const handleModalOk = () => {
      modalLoading.value = true;
      ebook.value.category1Id = categoryIds.value[0];
      ebook.value.category2Id = categoryIds.value[1];
      axios.post("/ebook/save", ebook.value).then((response) => {
        //后端有返回就去掉loading效果
        modalLoading.value=false;
        const data = response.data; //data就是后端的返回值CommonResp
        if (data.success){
          modalVisible.value = false;

          //重新加载列表
          handleQuery({
            page:pagination.value.current,
            size:pagination.value.pageSize
          });
        }else {
          message.error(data.message);
        }
      });
    };

    /**
     * 编辑
     */
    const edit = (record: any)=>{
      modalVisible.value=true;
      ebook.value=Tool.copy(record);
      categoryIds.value = [ebook.value.category1Id, ebook.value.category2Id];
    };

    /**
     * 新增
     */
    const add = ()=>{
      modalVisible.value=true;
      ebook.value={};
    };

    /**
     * 删除
     */
    const handleDelete = (id:number)=>{
      axios.delete("/ebook/delete/"+id).then((response) => {
        const data = response.data; //data就是后端的返回值CommonResp
        if (data.success){
          //重新加载列表
          handleQuery({
            page:pagination.value.current,
            size:pagination.value.pageSize
          });
        }
      });
    };

    const level1 = ref();
    let categorys: any;
    /**
     * 查询所有分类
     */
    const handleQueryCategory = () =>{
      loading.value = true;

      axios.get("/category/all").then((response)=>{
        loading.value=false;
        const data = response.data;

        if(data.success) {
          categorys = data.content;

          level1.value=[];
          level1.value = Tool.array2Tree(categorys,0);
          handleQuery({
            page:1,
            size:pagination.value.pageSize
          });
        }else {
          message.error(data.message);
        }
      });
    };

    const getCategoryName = (cid: number)=>{
      let result ="";
      categorys.forEach((item:any)=>{
        if(item.id == cid){
          result=item.name;
        }
      });
      return result;
    };

    onMounted(()=>{
      handleQueryCategory();
    });

    return {
      ebooks,
      pagination,
      columns,
      loading,
      handleTableChange,
      handleQuery,
      getCategoryName,

      edit,
      add,
      handleDelete,

      modalVisible,
      modalLoading,
      handleModalOk,
      ebook,
      param,
      level1,
      categoryIds
    }
  }
})
</script>

<style>
  img {
    width: 50px!important;
    height: 50px!important;
  }
</style>